Using and Interpreting Topographic Maps



Topographic maps can be used to determine the shape of the land, the direction of the flow of streams, and distance. To determine the shape of the land, we draw a line across the map. Wherever a line meets a contour, the exact height above sea level can be determined. Plotting those points on a vertical scale results in a profile (cross-section) of the land.

Homework: Due Wednesday, 12 November 2008

In text, reread pages 53- 57. Go to the section on published assignments or to the following link, contour line exercise, print a copy and complete the assignment.

Kaaterskill Clove Assignment
Take a look at the topographic map of Kaaterskill Clove, NY, found above. Find the stream near the southeast edge of South Mountain. Answer the following questions:
  1. What is the map's contour interval?
  2. What are the contour lines doing when they cross the stream?
  3. In what direction is the stream flowing?
  4. Calculate the average gradient of the terrain along the stream.

The scale of the map is 1:62500

Quiz on Monday, 10 November
study for quiz on Solar time and Time Meridians (Longitude).

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